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Finding the Fourth Proportional to 70,533.40, 105,800.10 and 52,907.80

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Solution

The fourth proportional to 70,533.40, 105,800.10 and 52,907.80 is: 79,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,533.40 : 105,800.10 = 52,907.80 : x
  2. Step 2: Convert to fraction form
    70,533.40/105,800.10 = 52,907.80/x
  3. Step 3: Cross multiply
    70,533.40x = 105,800.10 × 52,907.80
  4. Step 4: Simplify right side
    70,533.40x = 5,597,650,530.78
  5. Step 5: Solve for x
    x = 5,597,650,530.78/70,533.40
  6. Step 6: Final answer
    x = 79,361.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.